Doom Dimension or Bust!

S1 E26: Masquerade turns on his own gang and battles them, sending all of their Bakugan to the Doom Dimension! He then vows to defeat all of the Battle Brawlers and send their Bakugan to the same fate. In a strange twist, Runo decides to retire from the Brawlers. The group must convince her to stay. Only the combined strength of all the Brawlers will give them a chance against the powerful Masquerade!